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Gopal Electronics

Gopal Electronics was established in 1989 by Mr. Gangaram Panchal in Ahmedabad (India), who has over 40 years of experience in magnetic measurement of soft and hard magnetic material. He invented the first product that was the single sheet watt loss tester for watt loss measurement of motor stamping and EI type laminations. That product proves as very good solutions for the trades and suppliers of electrical stamping to evaluate their material grade. We setup our new manufacturing unit at naroda, Ahmedabad in 1995. Then the development chain starts and we developed range of products like Analog Iron Loss Tester, Digital Iron Loss Tester, Holiday Detector, 3 Phase Power Analyzer etc. Our range of products is world renowned. These instruments are endorsed by reputed companies like ABB, BHEL, Tata Steel, Emco Ltd, Alstrom (Areva), Crompton Greaves (Germany) etc.

Our Products

The standard Epstein frame method to evaluate magnetic properties of electrical steel sheet requires approx. 20 strips for testing, which shall be nun of use after testing. Single strip test method requires only one strip of dimension 30x305mm for testing. (Epstein test method gives average result of 20 strips and single strip method gives result of only one strip so there might be little difference in the result comparing to Epstein test method)

Our technology and latest software integration has made the Epstein test method very quick and easy with automatic test facility. Automatic testing at nine different induction points, and no need to set flux volt and frequency at each induction point as the conventional Epstein tester. Report in Ms-Excel sheet that gives collected raw data and measured parameters as well as B/H graph, B/Peak Permeability, B/W, B/H peak, B/VA, B/Ac permeability etc. graphs

Power transformers are characterized under open-circuit and short-circuit conditions. Power factor of the transformer is close to zero (<0.01) in open circuit condition, which demands very low phase error, from the power analyzer. The optimum technology of PA600 ensures that its voltage and current channels are carefully matched, provides optimum performance at low power factors.

Energy loss of the transformer is not only depends on the grade of electrical steel but also depend on the insulation of the electrical laminations. As per ASTM A717 and IS649 we have developed Franklin Tester which gives the surface insulation resistivity of electrical steel sheet. Franklin Tester is having auto test facility and thermal printer interface which make the testing just a key away.

It is very much important to inspect the grade and watt losses of motor stamping and EI lamination for high quality and energy efficient motor manufacturing or research on energy efficient motor development. Model RK45 is capable to measure the watt losses at 50Hz and 60Hz of motor stamping, EI lamination or any other size of specimen. RK45 is very useful tool for comparing different grades of motor stamping.

Gopal Electronics was established in 1989 by Mr. Gangaram Panchal in Ahmedabad (India), who has over 40 years of experience in magnetic measurement of soft and hard magnetic material. He invented the first product that was the single sheet watt loss tester for watt loss measurement of motor stamping and EI type laminations.